Is it obligatory to purchase programs, games, and movies that were downloaded and used without knowledge of intellectual property issues, or after becoming aware of them but before ceasing their use?

Programs that are prohibited from being downloaded must not be copied or downloaded, because that constitutes an encroachment on people's wealth, and one must repent from it. The value of the benefits of these programs must be paid to their owners. If that is not possible, it should be spent on charitable causes, such as giving charity to the poor.